Stem & Leaf Diagrams.

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Presentation transcript:

Stem & Leaf Diagrams

Example 1: The following are the results obtained by a group of students in a maths test. Use the stem & leaf diagram to calculate the following: How many students are in the class? What fraction of students scored under 70% in the test? What is the mean, mode, median, range & interquartile range?

Example 2: The following are the ages of participants in a 5km race Example 2: The following are the ages of participants in a 5km race. Use the stem & leaf diagram to calculate the following: How many participants ran the race? What is the mean, mode, median, range & interquartile range?

Creating your own Stem & Leaf Diagram Pick a random number between 1-50. Represent results in a stem & leaf diagram and then answer the questions below. How many students are in the class? What percentage of students chose a number less than 20? What is the mean, mode, median, range and interquartile range?

Back-to-back Stem & Leaf Height v’s Arm Span: Represent above information on a back-to-back stem & leaf diagram. Then calculate the mean, mode, median, range & interquartile range of both sets of data. Height Arm Span